This quiz works best with JavaScript enabled. Home > Cbse > Class 8 > Science > Force And Pressure > Class 8 Science Chapter 11 Force And Pressure – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 8 Science Chapter 11 Force And Pressure Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The strength of a force is usually expressed by its magnitude A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. An archer stretches a bow to shoot an arrow. Which force does she use? A) Magnetic Force. B) Friction. C) Muscular Force. D) Gravity. Show Answer Correct Answer: C) Muscular Force. 3. The pressure which is exerted by air around us is known as A) Muscular force. B) Friction. C) Force. D) Atmospheric pressure. Show Answer Correct Answer: D) Atmospheric pressure. 4. The state of motion of an object is described by its ..... and the ..... of motion A) Gravity, force. B) Speed, direction. C) Force, distance. D) Pressure, distance. E) Gravity, Direction. Show Answer Correct Answer: B) Speed, direction. 5. Two tyres of a tractor are very wide and huge because A) Pressure increase when area increases. B) Pressure reduces when area increases. C) None of the above. D) None of the above. Show Answer Correct Answer: B) Pressure reduces when area increases. 6. Pressure decreases when the surface area over which a force is applied increases A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. How much weight of air is always on our head A) 1000 Kg. B) 500 Kg. C) 10 Kg. D) None of the above. Show Answer Correct Answer: A) 1000 Kg. 8. TRUE OR FALSES.I unit of pressure is Pascal A) Maybe false, Maybetrue. B) False. C) True. D) Maybe true, Maybe false. Show Answer Correct Answer: C) True. 9. What is the SI unit of force A) Newton. B) Watt. C) Pascal. D) Dyne. Show Answer Correct Answer: A) Newton. 10. The easiest way to open a heavy door is by applying the force A) At the edge of the door far from the hinges. B) Near the hinges. C) At the top of the door. D) In the middle of the door. Show Answer Correct Answer: A) At the edge of the door far from the hinges. 11. Force changes the A) Motion of body. B) Speed of body. C) Shape of body. D) All of these. Show Answer Correct Answer: D) All of these. 12. Force acting per unit area of a surface is called the A) Net force. B) Contact Force. C) Pressure. D) Magnitude. Show Answer Correct Answer: C) Pressure. 13. The amount of force pushing on an area is the definition of ..... A) Barometer. B) Fluid. C) Pressure. D) Viscosity. Show Answer Correct Answer: C) Pressure. 14. Which force is non contact force A) Gravitational. B) Magnetic. C) Electrostatic. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. Which force act from distance and pull iron objects? A) Electrostatic Force. B) Muscular Force. C) Gravitational Force. D) Magnetic Force. Show Answer Correct Answer: D) Magnetic Force. 16. Force acting per unit area A) Thrust. B) Volume. C) Pressure. D) Density. Show Answer Correct Answer: C) Pressure. 17. The force exerted by a magnet is an example of a ..... force A) Atmospheric pressure. B) Muscular force. C) Gravitational force. D) Contact force. E) Non-contact force. Show Answer Correct Answer: E) Non-contact force. 18. Motion of drill machine is A) Rectilinear. B) Rotatory. C) Both a and b. D) None of these. Show Answer Correct Answer: C) Both a and b. 19. If more than one forces are acting on a body, then the effect on the body is due to the net force. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 20. Is displacement can be zero??? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 21. Find odd man out:N / m$^{2}$, Kg / m$^{3}$, bar, pascal A) N / m$^{2}$. B) Bar. C) Pascal. D) Kg / m$^{3}$. Show Answer Correct Answer: D) Kg / m$^{3}$. 22. Where would you find the largest pressure? A) At the bottom of the ocean. B) In a rockpool on the Great Barrier Reef. C) Close to ground on the Scotch oval. D) At the top of Mt Everest. Show Answer Correct Answer: A) At the bottom of the ocean. 23. Assertion (A):Sea divers wear a special suit when they go deep in the sea. Reason(R):The pressure increases as we go deeper into a liquid. A) Both A and R are true, and R is the correct explanation of the assertion. B) Both A and R are true, but R is not the correct explanation of the assertion. C) A is true, but R is false. D) A is false, but R is true. Show Answer Correct Answer: A) Both A and R are true, and R is the correct explanation of the assertion. 24. Chose the correct statement from the following- A) The SI unit of Force is Pascal. B) Force cannot change the direction of a body. C) Unbalanced forces are responsible for the change in shape. D) Balanced forces are responsible for the change in shape. Show Answer Correct Answer: C) Unbalanced forces are responsible for the change in shape. 25. The length of the column is ..... to the pressure exerted by air. A) None of these. B) Smaller. C) Greater. D) Equal. Show Answer Correct Answer: D) Equal. 26. When the area of contact is increased, pressure also increases. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 27. What is state of motion? A) Position of rest. B) Position of motion. C) Both by the state of rest or motion. D) None of these. Show Answer Correct Answer: C) Both by the state of rest or motion. 28. Fluids can also include ..... and ..... A) Solids and liquids. B) Solids and gases. C) Liquids and gases. D) Liquids. Show Answer Correct Answer: C) Liquids and gases. 29. The unit to measure atmospheric pressure is: A) Torr. B) Pascal. C) M$^{3}$. D) None of the above. Show Answer Correct Answer: A) Torr. 30. If motion repeat itself after regular interval of time, said to A) Random. B) Linear. C) Periodic. D) Zig Zag. Show Answer Correct Answer: C) Periodic. 31. Object attract towards Earth due to ..... A) Magnetic Force. B) Muscular Force. C) Friction. D) Gravity. Show Answer Correct Answer: D) Gravity. 32. A construction worker is worried about applying too much torque to a bolt using his wrench. What could he do to reduce his torque on the bolt? A) Increase the length of the wrench. B) Increase the force on wrench. C) Reduce the length of the wrench. D) Reduce the friction between the bolt and wrench. Show Answer Correct Answer: C) Reduce the length of the wrench. 33. Which one of the following forces is a contact force? A) Force of gravity. B) Electrostatic force. C) Magnetic force. D) Force of friction. Show Answer Correct Answer: D) Force of friction. 34. The envelop of air is known as the ..... A) Atmospheric nitrogen. B) Stratosphere. C) Atmosphere. D) Atmospheric pressure. Show Answer Correct Answer: C) Atmosphere. 35. The pressure exerted by a liquid is inversely proportional to its density. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 36. What is pressure? A) The amount of force exerted on a surface. B) The surface area of an object. C) The weight of an object. D) None of the above. Show Answer Correct Answer: A) The amount of force exerted on a surface. 37. Pressure is directly proportional to thrust A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 38. Who among the below claimed that vacuum could not exist in nature but was soon proven wrong? A) Aristotle. B) Galileo Galilei. C) Evangelist Torricelli. D) None of these. Show Answer Correct Answer: A) Aristotle. 39. A tennis player hits a tennis ball with a racket.Which of the following is applying the force? A) Ball. B) Racket. C) Tennis Player. D) None of the above. Show Answer Correct Answer: C) Tennis Player. 40. Leaves or fruits fall on the ground due to A) Muscular force. B) Gravitational force. C) Electrostatic force. D) Magnetic force. Show Answer Correct Answer: B) Gravitational force. 41. Which of the following is not a contact force? A) Muscular force. B) Frictional Force. C) Gravitational force. D) None of the above. Show Answer Correct Answer: C) Gravitational force. 42. Unit of force is?? A) N/m. B) Newton. C) Pascal. D) None of the above. Show Answer Correct Answer: B) Newton. 43. Thrust and force is similar to each other by which of the following factors A) Nature of operation. B) SI unit. C) Name. D) None of the above. Show Answer Correct Answer: B) SI unit. 44. Astronauts wear specially designed pressurized suits in space to counter the effects of ..... atmospheric pressure A) High. B) Low. C) Zero. D) None of the above. Show Answer Correct Answer: C) Zero. 45. Which has greater linear speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail? A) The inside horse. B) The outside horse. C) Neither. D) None of the above. Show Answer Correct Answer: B) The outside horse. 46. Liquid pressure depends on which of the following factors? A) Height of liquid column. B) Density of liquid. C) Height of the liquid column and density of liquid. D) None of the above. Show Answer Correct Answer: C) Height of the liquid column and density of liquid. 47. If a piston has a face of 2cm$^{2}$ and a force of 5N is applied what is the total pressure? A) 10N/m$^{2}$. B) 0.Chn/cm $^{2} $. C) 2.5n/cm $^{2} $. D) 10N/cm$^{2}$. Show Answer Correct Answer: C) 2.5n/cm $^{2} $. 48. An object weighing 400 N is placed on an area of 100 m$^{2 }$. What is the pressure applied by the object on that area? A) 40000 Pa. B) 0.04 Pa. C) 40 Pa. D) 4 Pa. Show Answer Correct Answer: D) 4 Pa. 49. What is the instrument used to measure Atmospheric Pressure(atm) A) Thermometer. B) Hygrometer. C) Barometer. D) Richter Scale. Show Answer Correct Answer: C) Barometer. 50. What is the CGS unit of moment of force? A) Joule. B) Pascal. C) Dyn. D) Dyn cm. Show Answer Correct Answer: D) Dyn cm. 51. Two Objects Repel Each Other. This Repulsion Could Be Due To: A) Either a magnetic or an electrostatic force. B) Electrostatic force only. C) Frictional force only. D) Magnetic force only. Show Answer Correct Answer: A) Either a magnetic or an electrostatic force. 52. Why does an heated tin can gets crushed when we put water on it? A) Due to its nature. B) Due to high pressure in the can. C) Due to low pressure in the can. D) None of the above. Show Answer Correct Answer: C) Due to low pressure in the can. 53. ..... force acts in direction opposite to the direction of movement. A) None of these. B) Frictional force. C) Muscular force. D) Electrostatic force. Show Answer Correct Answer: B) Frictional force. 54. What is resultant force? A) Force applied from the left side. B) Total Force applied. C) Force applied from the top. D) Force applied from the right side. Show Answer Correct Answer: B) Total Force applied. 55. A batsman hits the ball for a boundary past the bowler i.e. four runs. The batsman thus:(a) Changes the direction & speed of the ball(b) Does not change the direction but speed only(c) Does not change the speed but direction only(d) Does not change either direction or speed A) B. B) D. C) C. D) A. Show Answer Correct Answer: D) A. 56. Why won't you sink in mud if you wear boots? A) Because the surface area is larger creating less pressure. B) Has air in it to keep you floating. C) Because the mud won't want you. D) None of the above. Show Answer Correct Answer: A) Because the surface area is larger creating less pressure. 57. When A Force Of 5 N Acts On A Surface, It Produces A Pressure Of 500 Pa. The Area Of Surface Then Must Be A) 100 cm2. B) 50 cm2. C) 10 cm2. D) 0.01 cm 2. Show Answer Correct Answer: A) 100 cm2. 58. Which of the following describes effects of force? A) It may make an object move from rest. B) It may change the speed of an objecti if it is moving. C) It may change the direction of motionof an object. D) It may bring about a change in theshape of an object. E) All of these effects. Show Answer Correct Answer: E) All of these effects. 59. What is a force that works AGAINST MOTION? A) Force. B) Gravity. C) Friction. D) Motion. Show Answer Correct Answer: C) Friction. 60. If a given force is applied on a smaller area of contact the pressure exerted by it A) Decreases. B) Increases. C) Does not change. D) None of the above. Show Answer Correct Answer: B) Increases. ← PreviousNext →Related QuizzesScience QuizzesClass 8 QuizzesClass 8 Science Chapter 11 Force And Pressure Quiz 1Class 8 Science Chapter 11 Force And Pressure Quiz 3Class 8 Science Chapter 11 Force And Pressure Quiz 4Class 8 Science Chapter 11 Force And Pressure Quiz 5 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books